add missing files
diff --git a/dump_image/dump_image.c b/dump_image/dump_image.c
new file mode 100644
index 0000000..bc96abc
--- /dev/null
+++ b/dump_image/dump_image.c
@@ -0,0 +1,136 @@
+/*
+ * Copyright (C) 2008 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <errno.h>
+#include <fcntl.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+#include <sys/ioctl.h>
+
+#include "cutils/log.h"
+#include "mtdutils.h"
+
+#ifdef LOG_TAG
+#undef LOG_TAG
+#endif
+
+#define LOG_TAG "dump_image"
+
+#define BLOCK_SIZE 2048
+#define SPARE_SIZE (BLOCK_SIZE >> 5)
+
+void die(const char *msg, ...) {
+ int err = errno;
+ va_list args;
+ va_start(args, msg);
+ char buf[1024];
+ vsnprintf(buf, sizeof(buf), msg, args);
+ va_end(args);
+
+ if (err != 0) {
+ strlcat(buf, ": ", sizeof(buf));
+ strlcat(buf, strerror(err), sizeof(buf));
+ }
+
+ fprintf(stderr, "%s\n", buf);
+ exit(1);
+}
+
+/* Read a flash partition and write it to an image file. */
+
+int main(int argc, char **argv)
+{
+ ssize_t (*read_func) (MtdReadContext *, char *, size_t);
+ MtdReadContext *in;
+ const MtdPartition *partition;
+ char buf[BLOCK_SIZE + SPARE_SIZE];
+ size_t partition_size;
+ size_t read_size;
+ size_t total;
+ int fd;
+ int wrote;
+ int len;
+
+ if (argc != 3) {
+ fprintf(stderr, "usage: %s partition file.img\n", argv[0]);
+ return 2;
+ }
+
+ if (mtd_scan_partitions() <= 0)
+ die("error scanning partitions");
+
+ partition = mtd_find_partition_by_name(argv[1]);
+ if (partition == NULL)
+ die("can't find %s partition", argv[1]);
+
+ if (mtd_partition_info(partition, &partition_size, NULL, NULL)) {
+ die("can't get info of partition %s", argv[1]);
+ }
+
+ if (!strcmp(argv[2], "-")) {
+ fd = fileno(stdout);
+ } else {
+ fd = open(argv[2], O_WRONLY|O_CREAT|O_TRUNC, 0666);
+ }
+
+ if (fd < 0)
+ die("error opening %s", argv[2]);
+
+ in = mtd_read_partition(partition);
+ if (in == NULL) {
+ close(fd);
+ unlink(argv[2]);
+ die("error opening %s: %s\n", argv[1], strerror(errno));
+ }
+
+ if (!strcmp(argv[1], "system") ||
+ !strcmp(argv[1], "cache") ||
+ !strcmp(argv[1], "userdata")) {
+ read_size = BLOCK_SIZE + SPARE_SIZE;
+ read_func = mtd_read_raw;
+ } else {
+ read_size = BLOCK_SIZE;
+ read_func = mtd_read_data;
+ }
+
+ total = 0;
+ while ((len = read_func(in, buf, read_size)) > 0) {
+ wrote = write(fd, buf, len);
+ if (wrote != len) {
+ close(fd);
+ unlink(argv[2]);
+ die("error writing %s", argv[2]);
+ }
+ total += BLOCK_SIZE;
+ }
+
+ if (total != partition_size) {
+ close(fd);
+ unlink(argv[2]);
+ die("error reading %s", argv[1]);
+ }
+
+ mtd_read_close(in);
+
+ if (close(fd)) {
+ unlink(argv[2]);
+ die("error closing %s", argv[2]);
+ }
+
+ return 0;
+}